"Jan Alter" wrote in message ...

On 4/8/2016 9:44 AM, Tammy Longest wrote:
Delta faucet set screw won't budge, so hubby drilled out set screw
placed tap
out and used pliers to turn it when that broke off in the hole. Now what
should we do to get that out and the set screw.
Great dilemma you have. I read a web page of someone else who broke
their thread tap and wanted to drill it out. The suggestion was a
carbide drill bit.

http://www.shopyourway.com/questions/1089302

but I'm also thinking it might be a lot easier time-wise to put in a new
faucet.

Jan Alter

Carbide bit would not help especially if you have brooking tap
the only way to get tap out, you use old top sharping it up and
try to brake remaining part into micro peace's inside of hole, broking
peace's can be pull out by use of magnet or air pressure
(air use use safety glasses)
it is very slow process and in most cases you will need renew the
treads with larger tap (blind-tap) and installing larger set screw.
Note: before you use new tap make sure that all parts of old tap or out.